G'm, Dick. Thanks! Yes, a very sneeky way to make that black powder gun into a cartridge shooting gun...heheee...;-)))
I've thought about being a FFL dealer over many, many years.
But the main reason I didn't get one at home was, now the BARF can knock on your door 24/7 and demand to see your firearms recored book and even search your home without a cout order.
So give it some thought, it may never happen to you.
I don't think they raid a home, unless they had a very good tip of illegal gun activity.